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(No Model.)

M. M. SMITH.

D IE HOLDER AND STRAIGHTENING DEVIGB- FOR WIRE NAIL MACHINES. No. 379,735. Patented Mar. 20, 1888.

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NITE STATES ATENT Fries.

DIE-HOLDER AND STRAIGHTENING DEVICE FOR WIRE-NAIL MACHINES.

SPECIFICATION forming part of Letters Patent No. 379,735, dated March 20, 1888.

Application filed May 31, 1887.

citizen of the United States, and a resident of New York, in the county of New York and State of New York, haveinvented certain new and useful Improvements in Wire-Nail Ma chines, of which the following is a specification.

Myinven tion relates especially to those wirenai 'l machines in which the wire is seized by dies or grippers and held while being cut by other cutting-dies, or headed by the headingdie, or straightened, as in the machine patented by Hassall and Smith, No. 319,485, dated June 9, 1885, and others upon which the present in' vention is an improvement; and myinvention consists ofdevices for holding and securing the gripping and cutting-off dies in their respective dieblocks. which are simple, effective, and not expensive to make, but at the same time are easy and quick of adjustment when it is necessary to change from a larger to a smaller wire, or vice versa, as in making different sizes of nails.

My invention consists of such devices and of the straightening mechanism of such machines as shall enable the operator to open the straightener and to close and secure it with facility, as when inserting the end of a fresh coil of wire, or to adjust it quickly and se curely, as when changing the size of the wire, as described.

In the accompanying drawings, Figure 1 is a plan view of the straightener. Fig. 2 is a side elevation of the same. Fig. 3 is a see tional view of the cutting-off block, taken on line Z Z of Fig. 4. Fig. 4 is a sectional view on line \V \V of Fig. t. Fig. 5 is a perspectice view of a detail. Fig. 6 is a detail of the clamp-bolt.

The same letters refer to the same parts throughout.

In this invention the wire is straightened by passing between grooved rolls A A, placed so as to force the wire to assume a waved line in passing. For this purpose the rolls A A are placed in line on one side of the wire and a little distance apart, being fitted to run freely upon studs or shafts secured to the bed-plate B, while the rolls A A are placed upon the opposite side of the wire in position alternate to the rolls A A, and are fitted to run freely upon studs or shafts secured to the plate B, which is fitted to slide freely in a track pro vided for that purpose across the line of the Serial No. 30,926. (No model.)

wire, bringing the rolls A partly between the rolls A, as shown in Fig. 1.

The carriage B is actuated and held in place by means of the cam-lever O, which forces the rolls A against the wire W; or, if it is desired to open the straightener to facilitate the entrance of a fresh coil of wire, the cam lever being swung around to the position O,a spring, B throws the carriage B back, opening the straightener.

To enable the pressure of the rolls A upon the wire NY to be adjusted as desired for different sizes of wire, the cam -lcvcr G is provided with a stud upon which it revolves, and which can be adjusted in a slot, B", of the carriage B by means of a screw, B and secured by the binding-nut B, as shown.

The improvement in securing the cuttingoif dies G consists in securing them in the dieblocks E by means of the clamp-bolts F, gib G, and nut F, which draw the gib and dies back against the blocks E. The object at tained by the use of the gib G is to not only rc-enforce the die G and distribute the pressure of the bolt F upon the die-block E, but also to facilitate the placing and removing the cutting-die G, as occasion requires, as the removal of the gib G leaves increased room in which to turn the die G.

Having thus described the nature and use of my invention, I. claim-- 1. In a wire-nail machine, the combination of the straighteniugrolls A A, bed-plate B, and carriage B, with the adjustable cam-lever 0 and spring B constructed and operated as and for the purposes herein shown and described.

2. In a wircnail machine, the adjustingscrew B, in combination with the carriage B, the bolt B, and the plate B, cam-lever C, and slot B, substantially as and for the purposes herein shown and set forth.

3. Ina wire-nail machine, the combination ofthe die-bloc E and clamp-bolt F with the die G and gib G constructed and operated substantially as and for the purposes herein shown and set forth.

Signed at New York, in the county of New York and State of New York, this 26th day of May, A. D. 1887.

MINARD M. SMITH.

Vitnesses:

WM. H. }IASTINGS, ALOHA VIVARTTAZ. 

